Austin, the upper floors will not be changed in any significant way. The existing storefront windows from the old rooms will be the windows for the apartments. There will be a new bank of windows on the upper levels on the west side at the north and south ends. Inside the building along the east facing wall is a corridor. That will remain the same. They are not opening up the east side to any new windows. I can't remember how the building was built, but that could be a shear wall and is constructed where window openings might not be possible. Even if they were, the International Building Code does not allow windows directly on a property line. Where there is an adjoining piece of property. (It does allow windows on a property line, if the property line adjoins public right-of-way, like a street.) There are minimum clearances that have to be met. Link to DDRB Presentation Credit: Hotel Texas Annex, LLC and MAA Architects, via the city of Fort Worth
Rename, at one time, those buildings were under the same ownership, but since the annex was sold off from the Hilton Hotel, they are now under separate ownership. The Hilton Hotel Annex, now known as 815 Commerce will be converted into apartments. Therefore, the management teams will not be working together. Granted, the parking garage in the lower levels will be used for parking at the Autograph Collection Hotel (Marriott), but those operations will be done by that hotel and I'm sure the Hilton patrons will not be allowed to park there. The only connection that will remain will be the skybridge between the two buildings.